expiation vs satisfaction

expiation and satisfaction both are nouns.

Word	Noun	Adjective	Verb	Adverb
expiation	Yes	No	No	No
satisfaction	Yes	No	No	No

As nouns, expiation and satisfaction are synonyms defined as:

Other synonyms of expiation include atonement.

expiation (noun)	satisfaction (noun)
the act of atoning for sin or wrongdoing (especially appeasing a deity)	act of fulfilling a desire or need or appetite
compensation for a wrong	the contentment one feels when one has fulfilled a desire, need, or expectation
	compensation for a wrong
	(law) the payment of a debt or fulfillment of an obligation
	state of being gratified or satisfied